scholarly journals Energy Scheduling Using Decision Trees and Emulation: Agriculture Irrigation with Run-of-the-River Hydroelectricity and a PV Case Study

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3987 ◽  
Author(s):  
Omid Abrishambaf ◽  
Pedro Faria ◽  
Zita Vale ◽  
Juan M. Corchado
Keyword(s):  
Decision Tree ◽  
High Energy ◽  
Efficient Solutions ◽  
World Population ◽  
Technical Validation ◽  
Agriculture Irrigation ◽  
Technical Features ◽  
High Energy Consumption ◽  
Tree Approach

Agriculture is the very backbone of every country. Unfortunately, agricultural sustainability is threatened by the lack of energy-efficient solutions. The threat becomes more evident with the constantly growing world population. The research community must, therefore, focus on resolving the problem of high energy consumption. This paper proposes a model of energy scheduling in agricultural contexts. Greater energy efficiency is achieved by means of PV (photovoltaics) and hydropower, as demonstrated in the conducted case study. The developed model is intended for contexts where the farm is located near a river, so the farmer can use the flowing water to produce energy. Moreover, the model has been emulated using a variety of state-of-the-art laboratory devices. Optimal energy scheduling is performed via a decision tree approach, optimizing the use of energy resources and reducing electricity costs. Finally, a realistic scenario is presented to show the technical features and the practical behaviors of each emulator when adapting the results of the decision tree. The research outcomes demonstrate the importance of the technical validation of each model. In addition, the results of the emulation reveal practical issues that had not been discovered during the theoretical study or during the simulation.

Parameters affecting nitrifying biofilm reactors

1994 ◽  
Vol 29 (10-11) ◽  
pp. 1-11 ◽  
Author(s):  
M. Boller ◽  
W. Gujer ◽  
M. Tschui
Keyword(s):  
High Energy ◽  
Experimental Investigations ◽  
Operational Parameters ◽  
Oxygen Utilization ◽  
Trickling Filters ◽  
Biofilm Reactors ◽  
Biomass Activity ◽  
Rotating Biological Contactors ◽  
High Energy Consumption

The variables affecting nitrification in biofilms are identified on a theoretical basis. The influence of various design and operational parameters which affect the resulting substance fluxes into and out of the biofilm and the biomass activity regarding nitrification are illustrated with the help of experimental investigations with plastic media trickling filters, rotating biological contactors and different aerated biofilters. The results of experiments with these systems in tertiary nitrification applications reveal process limitations and technical measures to enhance nitrification performance in each system. In a case study, a comparison between the different biofilm processes and activated sludge alternatives showed that biofilm systems may lead to remarkably smaller reactor volumes, but high energy consumption due to unfavorable oxygen utilization.

scholarly journals Study on the Carbon Emissions in the Whole Construction Process of Prefabricated Floor Slab

2020 ◽  
Vol 10 (7) ◽  
pp. 2326
Author(s):  
Aisan Kong ◽  
Haibo Kang ◽  
Siyuan He ◽  
Na Li ◽  
Wei Wang
Keyword(s):  
Carbon Emissions ◽  
High Energy ◽  
Construction Process ◽  
Floor Slab ◽  
Construction Methods ◽  
Calculation Results ◽  
Three Stages ◽  
Traditional Construction ◽  
High Energy Consumption

The construction industry is characterized by high energy consumption and high carbon emissions. With growing concern about climate change, environmental protection is becoming increasingly important. In this paper, the whole construction process of prefabricated floor slab (PFS) is divided into three stages: production, transportation, and construction stages. Carbon emissions are calculated based on the life cycle assessment (LCA) method. A case study of PFS construction in Shaoxing city, China, was examined, and the calculation results were compared and evaluated with the traditional construction methods, which showed that in the production stage, carbon emissions increased due to mechanical operations during the prefabrication process. In the transportation stage, carbon emissions also increased due to the heavier prefabricated components during the transportation process. During the on-site construction stage, carbon emissions considerably decreased due to the lower hoisting frequency and less on-site pouring.

Case Study on Improving Energy Efficiency of Garment Materials by Women's Wear Style Transformation Design

2013 ◽  
Vol 712-715 ◽  
pp. 2870-2873
Author(s):  
Wei Zhen Wang ◽  
Cheng Gang Zheng ◽  
Lin Sun ◽  
Shi Wang ◽  
Man Qian Wang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Structural Design ◽  
Design Method ◽  
High Energy ◽  
Green Economy ◽  
Environment Friendly ◽  
Clothing Style ◽  
Consumption Situation ◽  
High Energy Consumption

In view of high energy consumption situation in the apparel industry in the background of green economy, the author explores the multi-functional structural design method for single garment and the diversified wearing forms of single product according to the study on clothing style change, so as to satisfy the individualized and special needs of consumers. This not only improves the energy efficiency of clothing materials, but also optimizes life cycle of products, and accordingly promotes the environment-friendly clothing philosophy and provides new solution to the contradiction between mass production and individualized consumption of garments.

A Summer Case Study on Applying Ventilated Double-Skin Facade to a Building in Cold Zone of China

2012 ◽  
Vol 608-609 ◽  
pp. 1682-1685
Author(s):  
Hua Yang ◽  
Qian Zhao Wan ◽  
Bin Yang ◽  
Chunhua Sun ◽  
Guo Qiang Xia ◽  
...  
Keyword(s):  
High Energy ◽  
Indoor Temperature ◽  
Air Cavity ◽  
Indoor Space ◽  
Cold Zone ◽  
Double Skin ◽  
Lower Temperature ◽  
High Energy Consumption ◽  
Testing Room

It is crucial for ventilated double-skin facade (DSF) compared to single- skin facade to avoid high energy consumption, optic pollution and inadequate ventilation problems. In this paper, the performance of ventilated DSF applied to a building located in a university in cold zone (Tianjin) of China is tested. The original conditions of both outdoor and indoor within each testing room are comparatively same.The temperature behaviors of both the ventilated air cavity of DSF and indoor space with different experimental modes during summer are investigated. Additionally, the effects on indoor temperature due to the ventilated DSF with different modes in summer are also analyzed. The results shows that the ventilated DSF is a effective approach to reduce indoor temperature; the opening airflow windows of external façade of the DSF should be effective to lower temperature of both the ventilated air cavity of DSF and indoor space.

Passive Energy-Saving Design in Hot and Humidity Area: A Case Study of Multi-Functional Stadium of Guangdong College of Pharmacy

2011 ◽  
Vol 121-126 ◽  
pp. 715-719
Author(s):  
Lei Zhang ◽  
Qing Lin Meng ◽  
Jin Li
Keyword(s):  
Energy Conservation ◽  
Natural Ventilation ◽  
High Energy ◽  
Natural Lighting ◽  
Playing Field ◽  
Architectural Lighting ◽  
Energy Conservation Measures ◽  
High Energy Consumption ◽  
Test Result

As stadiums have high energy consumption in architectural lighting and air conditioning, how to make full use of natural lighting and natural ventilation is the key to architectural energy conservation. To this end, many passive energy conservation measures have been taken into account in designing Multifunctional Stadium of Guangdong Pharmaceutical University. For instance, strip light windows with vertical shading have been installed on east and west facade, open external windows on south and north facade etc. Test result of the Stadium shows that the above-mentioned passive design methods are able to increase natural light intensity of the playing field and prevent glare, improve wind velocity of natural ventilation and comfort in spectator areas.

scholarly journals Análisis de la capacidad necesaria en los procesos de tratamiento de aguas mediante programación matemática. Un caso de estudio

2020 ◽  
Vol 20 (1) ◽  
pp. 37
Author(s):  
María Colomina ◽  
Modesto Pérez-Sánchez ◽  
Raquel Sanchis ◽  
Manuel Díaz-Madroñero
Keyword(s):  
Energy Consumption ◽  
Water Treatment ◽  
Capacity Planning ◽  
Programming Model ◽  
High Energy ◽  
Mathematical Programming Model ◽  
Stationary Model ◽  
Water Treatment Plants ◽  
High Energy Consumption

One of the main problems of the water treatment plants is the high energy consumption they have to face. Therefore, reducing energy consumption is an imperative objective for these facilities. This work proposes a mathematical programming model for the capacity planning and the management of water treatment plants using dilution process that will reduce the energy consumption in the aeration phase. This model presents, as a novelty, the inclusion of the time variable, generating a quasi-stationary model that has been applied to a real case study.

Sign in / Sign up

Export Citation Format

Share Document